166
FNCA52 TJSJ 280730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST TUE APR 28 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-282000-
SOUTHEAST COASTAL PLAINS-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 60 40
TEMP (24H TREND) 87 (0) 71 (-3) 89
RH % (24H TREND) 54 (-13) 90 (0) 55
WIND 20FT/EARLY(MPH) E 8 E 9 E 12
WIND 20FT/LATE(MPH) SE 9 NE 5 SE 12
MIXING HGT(FT-AGL/MSL)2690 4270
TRANSPORT WND (MPH) E 7 E 8
VENT RATE (KT-FT) 16140 29890
DISPERSION 4 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-282000-
SOUTHERN HILLS-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 50 40
TEMP (24H TREND) 83 (+1) 68 (-4) 85
RH % (24H TREND) 70 (-2) 98 (+4) 67
WIND 20FT/EARLY(MPH) E 5 E 5 E 9
WIND 20FT/LATE(MPH) SE 5 NE 5 SE 9
MIXING HGT(FT-AGL/MSL)2460 4980
TRANSPORT WND (MPH) SE 5 E 7
VENT RATE (KT-FT) 9840 29880
DISPERSION 4 5
DSI 6 1 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-282000-
NORTH COASTAL PLAINS-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 90 60 70
TEMP (24H TREND) 87 (-1) 71 (-2) 88
RH % (24H TREND) 65 (-2) 99 (+4) 64
WIND 20FT/EARLY(MPH) E 5 E 6 E 8
WIND 20FT/LATE(MPH) E 5 SE 6 E 10
MIXING HGT(FT-AGL/MSL)2130 4210
TRANSPORT WND (MPH) NE 3 E 8
VENT RATE (KT-FT) 6390 29470
DISPERSION 3 5
DSI 3 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-282000-
NORTHERN HILLS-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 90 50 70
TEMP (24H TREND) 85 (-1) 69 (-2) 87
RH % (24H TREND) 70 (+4) 99 (+3) 67
WIND 20FT/EARLY(MPH) LGT/VAR E 5 E 6
WIND 20FT/LATE(MPH) LGT/VAR SE 5 NE 8
MIXING HGT(FT-AGL/MSL)2830 5030
TRANSPORT WND (MPH) NW 1 E 6
VENT RATE (KT-FT) 2830 25150
DISPERSION 2 5
DSI 2 1 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-282000-
WEST COAST-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 60 40 40
TEMP (24H TREND) 88 (-1) 71 (-2) 89
RH % (24H TREND) 65 (-1) 98 (+4) 63
WIND 20FT/EARLY(MPH) E 5 NE 8 E 9
WIND 20FT/LATE(MPH) SE 6 NE 8 E 9
MIXING HGT(FT-AGL/MSL)2860 4470
TRANSPORT WND (MPH) SE 3 SE 5
VENT RATE (KT-FT) 8580 17880
DISPERSION 4 5
DSI 5 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-282000-
EASTERN INTERIOR-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 60
TEMP (24H TREND) 85 (0) 69 (-4) 86
RH % (24H TREND) 68 (0) 98 (+3) 66
WIND 20FT/EARLY(MPH) SE 6 SE 6 E 8
WIND 20FT/LATE(MPH) SE 6 E 5 E 8
MIXING HGT(FT-AGL/MSL)2640 4900
TRANSPORT WND (MPH) SE 5 E 8
VENT RATE (KT-FT) 10560 34300
DISPERSION 4 5
DSI 5 1 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-282000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 60 60
TEMP (24H TREND) 82 (+3) 67 (-4) 83
RH % (24H TREND) 73 (-5) 99 (+1) 70
WIND 20FT/EARLY(MPH) SE 5 LGT/VAR E 8
WIND 20FT/LATE(MPH) SE 5 LGT/VAR SE 8
MIXING HGT(FT-AGL/MSL)2330 4380
TRANSPORT WND (MPH) SE 6 E 9
VENT RATE (KT-FT) 11650 35040
DISPERSION 4 5
DSI 5 1 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-282000-
CENTRAL MOUNTAIN RANGE-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 40 60
TEMP (24H TREND) 82 (+1) 66 (-4) 85
RH % (24H TREND) 73 (+1) 100 (+4) 69
WIND 20FT/EARLY(MPH) LGT/VAR E 5 E 5
WIND 20FT/LATE(MPH) LGT/VAR E 5 E 5
MIXING HGT(FT-AGL/MSL)3230 5690
TRANSPORT WND (MPH) S 2 SE 5
VENT RATE (KT-FT) 6460 22760
DISPERSION 3 5
DSI 3 1 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-282000-
CAYEY MOUNTAIN RANGE-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 50
TEMP (24H TREND) 80 (0) 68 (-3) 81
RH % (24H TREND) 75 (0) 100 (+2) 72
WIND 20FT/EARLY(MPH) LGT/VAR E 5 E 8
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR SE 8
MIXING HGT(FT-AGL/MSL)2060 4560
TRANSPORT WND (MPH) E 5 E 9
VENT RATE (KT-FT) 8240 36480
DISPERSION 4 5
DSI 6 1 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-282000-
VIEQUES-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 60
TEMP (24H TREND) 87 (+1) 74 (-1) 86
RH % (24H TREND) 62 (-6) 94 (-1) 62
WIND 20FT/EARLY(MPH) E 9 E 9 E 8
WIND 20FT/LATE(MPH) SE 8 E 8 SE 8
MIXING HGT(FT-AGL/MSL)2440 2840
TRANSPORT WND (MPH) SE 7 SE 8
VENT RATE (KT-FT) 14640 19880
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-282000-
CULEBRA-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 60 60
TEMP (24H TREND) 88 (+2) 75 (-2) 88
RH % (24H TREND) 62 (-8) 91 (-1) 62
WIND 20FT/EARLY(MPH) SE 9 E 8 E 8
WIND 20FT/LATE(MPH) SE 8 E 8 E 8
MIXING HGT(FT-AGL/MSL)2430 3120
TRANSPORT WND (MPH) SE 7 SE 8
VENT RATE (KT-FT) 14580 21840
DISPERSION 4 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-282000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 30
TEMP (24H TREND) 89 (+1) 72 (-2) 90
RH % (24H TREND) 55 (-8) 92 (+1) 52
WIND 20FT/EARLY(MPH) E 9 E 10 E 12
WIND 20FT/LATE(MPH) SE 10 NE 9 SE 12
MIXING HGT(FT-AGL/MSL)3480 4580
TRANSPORT WND (MPH) E 6 SE 8
VENT RATE (KT-FT) 17400 32060
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-282000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 60 60
TEMP (24H TREND) 85 (+1) 74 (-3) 85
RH % (24H TREND) 65 (-6) 92 (+2) 63
WIND 20FT/EARLY(MPH) SE 10 SE 9 E 9
WIND 20FT/LATE(MPH) SE 10 E 9 SE 9
MIXING HGT(FT-AGL/MSL)2650 3240
TRANSPORT WND (MPH) SE 12 SE 10
VENT RATE (KT-FT) 26500 29160
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-282000-
ST CROIX-
330 AM AST TUE APR 28 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 50 50
TEMP (24H TREND) 86 (+1) 74 (-2) 86
RH % (24H TREND) 65 (-7) 92 (-4) 63
WIND 20FT/EARLY(MPH) E 11 E 10 E 11
WIND 20FT/LATE(MPH) SE 11 E 9 SE 10
MIXING HGT(FT-AGL/MSL)2470 4320
TRANSPORT WND (MPH) SE 14 SE 12
VENT RATE (KT-FT) 29640 43200
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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